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From an acoustical point of view, bone is a complex medium as it is heterogeneous, anisotropic and viscoelastic. This chapter reviews the basic notions of physical acoustics which are necessary to tackle the problem of the ultrasonic propagation in bone, in the perspective of the application of quantitative ultrasound (QUS) techniques to bone characterization. The first section introduces the basic...
Recent studies indicate that, despite absorption and heterogeneity, long cortical bones support guided waves propagation in the axial transmission configuration. Currently, there is a need to implement a robust method to extract guided mode wave numbers adapted to clinical requirements. Particularly the probe dimensions are limited by the accessibility to the skeletal site. Recently, an approach based...
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